I have just learnt that a dear friend has been given only weeks to live please can someone advise me on what to expect when I see her?

A friend has been battling lung cancer for years now and today I learnt that it has spread to the brain and so she only has weeks to live. Naturally I want to see her before she passes away but I want to prepare myself. Her daughter told me that she is very confused and can’t speak because her voicebox has gone and “not to expect her to be anything like how she was when I saw her a few months ago”. Please can someone help me prepare myself. I hear cancer makes you lose a lot of weight in the final stages but other than that, I don’t know. Please help, I’m scared that I won’t be able to stay strong for her.